-Glass containers of varying style/size precleaned with nitric acid and distilled water.
-Rubber stoppers to seal the containers.
-Beakers (50 mL, 250 mL or 500 mL)
-Graduated cylinders (10 mL, 25 mL or 50 mL)
-Medicine dropper
-Stirring rod
-Silver nitrate, 0.10 M (dissolve 17 g of AgNO3 in distilled water to make 1.0L of the solution)
- Potassium hydroxide, 0.8 M (dissolve 22.4 g KOH in distilled water to make 500 mL of the solution)
- Dextrose, 0.25 M (dissolve 11.2 g dextrose in distilled water to make 250 mL of the solution)
- Ammonia 15 M concentrated
- Nitric acid 16 M conentrated
1. Place 120 mL of silver nitrate solution in a 500 mL beaker. (10 mL for a 50 mL beaker, or 60 mL for a 250 mL beaker)
2. Add concentrated ammonia (15M) in drops, while stirring until the precipitate dissolves.
3. Add 60 mL of of potassium hydroxide. (7 mL for a 50 mL beaker, or 30 mL for a 250 mL beaker)
4. If precipitate reforms, add more drops of ammoina and stir until dissolved.
5. Pour 12 mL of dextrose solution into the desired flask. (2 mL of dextrose to a 50 mL container, or 6 mL to a 250 mL container)
6. Add the contents of the beaker to the dextrose in the flask and stopper it.
7. Swirl the flask in circles so the contents coat the entire inner surface. The silver film should begin to form within about 1 minute. After about 5 minutes, the flask should be completely coated.
8. Dispose of the excess solution in the flask and with water, rinse the flask well (at least 4 times).
9. Once dry, stopper the flask to prevent oxidization. This process is permanent and cannot be cleaned from the flask!! (Therefore don't use your teacher's $200 Erlenmeyer flasks!)
-Glass containers of varying style/size precleaned with nitric acid and distilled water.
-Rubber stoppers to seal the containers.
-Beakers (50 mL, 250 mL or 500 mL)
-Graduated cylinders (10 mL, 25 mL or 50 mL)
-Medicine dropper
-Stirring rod
-Silver nitrate, 0.10 M (dissolve 17 g of AgNO3 in distilled water to make 1.0L of the solution)
- Potassium hydroxide, 0.8 M (dissolve 22.4 g KOH in distilled water to make 500 mL of the solution)
- Dextrose, 0.25 M (dissolve 11.2 g dextrose in distilled water to make 250 mL of the solution)
- Ammonia 15 M concentrated
- Nitric acid 16 M conentrated
1. Place 120 mL of silver nitrate solution in a 500 mL beaker. (10 mL for a 50 mL beaker, or 60 mL for a 250 mL beaker)
2. Add concentrated ammonia (15M) in drops, while stirring until the precipitate dissolves.
3. Add 60 mL of of potassium hydroxide. (7 mL for a 50 mL beaker, or 30 mL for a 250 mL beaker)
4. If precipitate reforms, add more drops of ammoina and stir until dissolved.
5. Pour 12 mL of dextrose solution into the desired flask. (2 mL of dextrose to a 50 mL container, or 6 mL to a 250 mL container)
6. Add the contents of the beaker to the dextrose in the flask and stopper it.
7. Swirl the flask in circles so the contents coat the entire inner surface. The silver film should begin to form within about 1 minute. After about 5 minutes, the flask should be completely coated.
8. Dispose of the excess solution in the flask and with water, rinse the flask well (at least 4 times).
9. Once dry, stopper the flask to prevent oxidization. This process is permanent and cannot be cleaned from the flask!! (Therefore don't use your teacher's $200 Erlenmeyer flasks!)